First discovery of monotremes in South America

@article{Pascual1992FirstDO,
  title={First discovery of monotremes in South America},
  author={Rosendo Pascual and Michael Archer and Edgardo Ortiz Jaureguizar and Jos{\'e} L Prado and Henk Godthelp and Suzanne J. Hand},
  journal={Nature},
  year={1992},
  volume={356},
  pages={704-706}
}
UNTIL now, the egg-laying monotremes were only known from the Australian continent, where they have lived since the early Cretaceous period to the present1. Here we report the first monotreme from outside the Australian continent, an ornithorhyn-chid, from sediments of late early Palaeocene age in Patagonia, southern Argentina. This discovery demonstrates the Gondwanan nature of monotremes and supports the hypothesis that the Patagonian Terrane of southern South America had a biotic history… 

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References

SHOWING 1-7 OF 7 REFERENCES

First Mesozoic mammal from Australia—an early Cretaceous monotreme

Here we describe Australia's first known Mesozoic mammal and the first known early Cretaceous mammal from Gondwanaland. Steropodon galmani n. gen. and sp., discovered in early Cretaceous sediments at

The origin of egg-laying mammals

Steropodon appears to have been derived from therians before the development of tribosphenic teeth, possibly during the Jurassic period, and radically alters currently held opinion that monotremes and therians diverged at the earliest stage of mammalian evolution.

Historical biogeography of southern South America

Historical biogeograpohic patterns of relationships among southern and northern South America, North America, and southern temperate areas were investigated by a cladistic biogeographic analysis of

The great American biotic interchange

I. The Framework: An Overview.- 1 * A Kaleidoscope of Plates, Faunal and Floral Dispersals, and Sea Level Changes.- 2 * Caribbean Plate Relative Motions.- 3 * Geochronology and Land-Mammal

Historical Biogeography, Plate Tectonics, and the Changing Environment

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